<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="utf-8" />
    <title>string类型</title>
    <script>
        //var str = "helloworld";
        var str = 'helloworld';
        console.log(str);
        console.log(typeof str);
    </script>
</head>

<body>
</body>

</html>